What is Germ Layers?
A germ layer is a group of cells in an embryo that interact with each other as the embryo develops and contributes to the formation …
Embryology
Protostome: Definition, Types, and body plans
Protostome Definition Protostomes are a clade of animals that undergo protostomy during their embryonic development. The protostomes, together with the Deuterostomes and the Xenacoelomorpha, make …
Notochord: Definition, Structure, and Function
Notochord Definition The notochord is an elastic rod which extends through Chordate organisms, providing rigid support. In the more derived Chordates, the Vertebrates, the notochord …
What is Gastrulation Its Process, and Types?
Gastrulation Definition Gastrulation is the process during embryonic development that changes the embryo from a blastula with a single layer of cells to a gastrula containing multiple …